Spark-arrester



lRorERT M. WADE, on SUMMIT POINT, `VIRGIN-IA.

SPARK-ARRESTER.

Specification 0f Letters Patent No. 5,081, dated April 24, 1847.

To all whom may concern:

Be it known that I, ROBERT M. WADE, of

Summit Point, Jefferson count-y, State of Virginia, have Invented a new and useful improvement 1n the mode of conveying the Vsmoke and sparks from the. smoke-stacks of furnaces of engines and extinguishing the` sparks, which is described as follows, reference being had to the annexed drawings of the same, making part of this specification..

The nature of thisk inventionv and improvep ment consists, in combining with the ordinary steam engine a pump' for pumping the smoke and sparks for the Asmoke chamber.

and discharging them below the engine into water, or otherwise or wherever desired, the

piston rod of said pump being connected with the piston rod of thesteam cylinder Vby a cross head or other suitable means causing them to work simultaneously7 by which arrangement the annoyance and danger arising from the smoke and? sparks escaping from the smoke stack, as` ordinarily arranged, will be removed.

A is av common locomotive engine.

B is the steam cylinder; D, the smoke box; E, the smoke stack; F, the pipes for conveying the escape steam into the smoke stack-the two upper endsk being united into one pipe in the smoke stack and containing two stop cocks T.

G is a valve for closing the smoke stack attached to a horizontal axle Q having a crank Q operated by a rod R and having an opening in the same surrounded by a short pipe S which is open at both ends and which closes over the connected ends of the steam pipes F allowing the escape steam to pass through the said valve into. the smoke pipe E when said valve is closed.

H is a pump vcombined withthe steam cylinder for drawing the sparks and smoke from the smoke box and discharging them wherever required.

I is the induction tube through which the sparks are drawn by suction from the smoke box into the cylinder ofthe pump, one end" of said tube being bolted to the end ofthe plate of thepump cylinder and theother end to the end plate of the smoke box."

J is theeduction tube through which the' sparks are driven by the piston of the pump7 'one end of said tube-being bolted to the end plate of the pump and the other end opening Into the air, or into a receiver containing water, or other suitable place.

K is a valve at the end of the induction tube hinged to the inside of the end Vplate of the pump, being open while the pistonis moving toward the head of the pump andv closed when moving in a contrary direction as represented in Fig. t. v L is a valve 1n the eduction tube arrange so as to close when the valve K opens and Vto open when the valve K closes, being hinged to the voutside of the end plate ofthe ump. n, v M is the piston rod of the steam cylinder. N is the .piston rod of the pump.

n O .is y'the cross head connecting the piston rods -M' and N together causing them to work simultaneously in the same direction. F 1P Pare the parallel guides for the steam cylinder crosshead.

. P'is the guide for the cross head of the pump. i

Q is the crank axle of the valve G. B. is the rod for turning the crank axle.`

`S is the opening in the valve Gsur-r Y rounded by the short pipe Si attachedv to Yso the valve and closing down'over the united" ends of the steam pipes Fwhich conducts the escape steam through the same while the valve G prevents the escape of the smoke and sparks through the stack. The valve Gr is brought to a horizontal position for clos-y ing `the smoke stack when the pump is in op-V eration and is turned to a vertical position, i

or opened, when the engine is at rest.

T T are the cocks for allowing a portion of the n exhaust steam to escape into the smoke box for the'purpose of extinguishing the sparks and to prevent the pump becoming overheated the steam being partially condensed in the smoke box.

U is an inclined guard-for giving the" fire a downward direction to prevent the ascent of the same among 'the machinery.

The pumps are combined with `and secured tothe smoke box by means vof thevbraces Y and steam chests V adapted and tted to the sides thereof and by making the under sides ofthe flanges of the pump concave and corresponding with the convex sides of the flanges of the steam cylinders and properly secured upon them inany permanent and durable manner by means oi' double concave plates X secured to the sides of the piunp and cylinder by the screws x or in any convenient manner.

A similar pump and arrangement of parts are combined with the other steam cylinder for a like purpose-similar letters being used for similar parts.

The several parts of the apparatus may be constructed, arranged, and operated in any convenient way or manner for producing results similar to the above by means substantially the same, as those above described. The head of the pump may be made concave on the inner side or of an obtuse angled shape; or in two segments, or semicir'cles, the upper segmentl being stationary and bolted to the 'cylinder Vand the lower segment hinged by its straight side to the straight side of the upper segment to answer as a valve for preventing clogging from an-accumulation of sparks inthe pump, the end of the eduction tube bolted to the outside of the head of the pump being made suiciently large to embrace and cover the said lower segment of the head which is to serve the double purpose of a head and valve, which arrangement would requireV the' eduction tube to be bolted to the circular flange of the pump instead of the head of the pump as described. Y

The parallel guides P P are sustained in their required position by the plate Z1 xed to the end of the cylinder and the vplate Z secured to the'frame of the engine by the brace or arm a.

On firing up the engine the valve G must be turned to a vertical position by moving the rod R to which it is attached; the furnace and engine being in full operation and it being required to prevent the sparks escaping from the smoke stack the engineer must move the rod R longitudinally which will turn the valve Gr to a horizontal position, the aperture in the same surrounded by the additional pipe S allowing it to drop over the upper end of the exhaust or escape steam pipe F thus shutting oi the communication between the smoke box and smoke stack E. IThe cocks T T are then partially opened which allowsa portion of the waste steam to enter the smoke boX in quantity suliicient to extinguish the sparks, and'regulated by said cocks the main body of the waste steam being allowed to escape in the usual Vmanner through the chimney or stack it being unnecessary to allow all the waste steam to enter the smoke boX and pumps as it would create an undue pressure on the several ports.

What I claim as my invention and desire to secure by Letters Patent is- 1. Pumping the sparks from the smoke box of a locomotive engine when the sparks are extinguished or partially so by the introduction of a portion of the escape steam manner and for the reasons above stated.

2. I likewise claim the arrangement of the valve G in the Vsmoke stack E as' constructed with` the short pipe S in combina- V'tion with the united steam'pipes F for prethrough the cocks T T substantially in the 

